Unitary, disposable filter unit



FIG. 1 is a top plan view of a unitary disposable filter unit showing our new design;

FIG. 2 is a left side elevation of the unit shown in FIG. 1;

FIG. 3 is a front elevation thereof;

FIG. 4 is a right elevation thereof; and

FIG. 5 is a bottom plan view thereof.

The undisclosed opposite side of FIG. 3 is a mirror image of the side shown. 

The ornamental design for a unitary, disposable filter unit, as shown and described. 